calculate the number of (a) nitrogen molecules (n2 molecules) and (b) nitrogen atoms (n atoms) in 0.253 g of nitrogen gas (n2)
Answers
The number of nitrogen molecules and nitrogen atoms in 0.253 g of nitrogen gas (N2) are as follows:a) Number of nitrogen molecules = 1.55 × 10²² N2 molecules
Number of nitrogen atoms = 3.1 × 10²² N atoms calculate the number of nitrogen molecules and nitrogen atoms In 0.253 g of nitrogen gas (N2), we use the following Firstly, we calculate the molar mass of nitrogen gas (N2).The molar mass of nitrogen gas (N2) is = 14 × 2 = 28 g/mol This means that one mole of nitrogen gas has a mass of 28 g. Next, we use the following formula to calculate the number of moles of nitrogen gas :N = m / MM where, N = Number of mole sm = Mass of the substance MM = Molar mass of the substance On substituting the values, we get:N = 0.253 g / 28 g/mol = 0.0090357 mol
Now, to calculate the number of nitrogen molecules and nitrogen atoms, we use the following formulas Number of nitrogen molecules = Avogadro's number × Number of moles of nitrogen gas Number of nitrogen atoms = 2 × Avogadro's number × Number of moles of nitrogen gas where, Avogadro's number = 6.022 × 10²³On substituting the values, we get Number of nitrogen molecules = 6.022 × 10²³ × 0.0090357 = 1.55 × 10²² N2 molecules) Number of nitrogen atoms = 2 × 6.022 × 10²³ × 0.0090357 = 3.1 × 10²² N atoms In summary, 0.253 g of nitrogen gas (N2) contains 1.55 × 10²² nitrogen molecules (N2 molecules) and 3.1 × 10²² nitrogen atoms (N atoms).
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Related Questions
Instructions: Use the periodic table to answer the questions below:
1) How many periods are there on the periodic table?
2) How many groups are there on the periodic table?
3) Which element is found in Group 2 and Period 3?
4) Which element is found in Group 17 and Period 2?
5) Which element is found in Group 10 and Period 4?
6) Which element is found in Group 18 and Period 6?
7) Which element is found in Group 1 and Period 7?
8) Which element is found in Group 14 and Period 6?
Answers
Answer:
1. 7 periods
2. 18 groups
3.Magnessium
4.Fluorine
5.Nickel
6.Radon
7.Francium
8.Lead
Explanation:
once a metal ion has become fully hydrated to become a metal hydrate, the resulting complex can exhibit behavior that is characteristic of a
Answers
Water molecules hydrate or "solvate" metal ions in aqueous solutions. This main sphere of hydration typically consists of six water molecules. The hydrated metal ion undergoes a stepwise hydrolysis in which it donates an H ion, acting as a weak acid. The correct option is B.
In an aqueous solution, metal ions are hydrated, which means that a protective shell of typically four or six water molecules surrounds them. A complex ion (or, simply, complex) is a type of ion that is created when a core metal ion joins forces with one or more surrounding ligands, molecules, or ions that each possesses at least one lone pair of electrons.
Lewis acid-base interaction causes a metal ion and ligand to combine to form a complex ion. The ligand, which has one or more lone pairs of electrons, functions as a Lewis base, while the positively charged metal ion functions as a Lewis acid.
Thus the correct option is B.
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Your question is incomplete, but most probably your full question was,
once a metal ion has become fully hydrated to become a metal hydrate, the resulting complex can exhibit behavior that is characteristic of a
A. Strong acid
B. Weak acid
C. Strong base
D. Weak base
difference between steam distillation and fractional distillation
Answers
According to the research, the correct answer is that steam distillation the components of a mixture are separated by direct injection of steam while in fractional distillation vaporization and condensation occur successively.
What is distillation?It is a process that allows the separation of mixtures in the liquid phase into their individual components.
In this sense, fractional distillation requires a fractionating column and is used when the boiling points of the volatiles in the liquid mixture are below 80 °C.
On the other hand, steam distillation is used to purify or isolate the compounds whose boiling point is very high based on a steam separation.
Therefore, we can conclude that in steam distillation a current of water vapor is passed while in fractional distillation a vaporization and condensation of the volatile component is carried out.
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What is the 3D shape of H3o+
Answers
3D view of H3O+
The stronger line means that the Hydrogen is closer to us in a 3D view, meanwhile the line with traces, or you cal also see as a weaker line, it means that the Hydrogen is farther from us in a 3D view
Lewis Structure of H3O+
what is the set point on a thermostat? How is this idea important to feedback cycles?
Answers
Answer:
The set point on a thermostat is the desired or target temperature that a heating or cooling system is set to maintain. The thermostat continuously measures the current temperature of the room and compares it to the set point. If the current temperature is lower than the set point, the thermostat will signal the heating system to turn on, and if the current temperature is higher than the set point, the thermostat will signal the cooling system to turn on. The set point can be adjusted manually or automatically.
The idea of a set point is important to feedback cycles because it represents a reference value or goal that a system tries to achieve and maintain. In a feedback cycle, a set point provides a stable reference value that helps to regulate the system's output. The feedback loop continuously measures the output of the system and compares it to the set point. If the output is lower than the set point, the system adjusts itself to increase the output, and if the output is higher than the set point, the system adjusts itself to decrease the output.
The set point is critical for maintaining a stable feedback loop and preventing instability or oscillations in the system's output. If the set point is too high or too low, the system may oscillate around the set point or fail to achieve it altogether. Therefore, choosing an appropriate set point is essential for maintaining a stable and efficient feedback cycle in various systems, including thermostats, control systems, and biological systems.
the size of the negative charge of an electron us exactly the same as the size of the positive charge of a proton. what is the overall charge of the helium atom
Answers
154 KB (12,134 words) - 15:57, April 9, 2021
Draw the atomic structure of sodium with its electronic configuration.
Answers
here you go. kindly check attatchement
In the electron transport chain, complex ii is a molecule from teh citric acid cycle also called?
Answers
The electron transport chain is the sequence involving the complexes undergoing redox reactions. The enzyme in complex II of ETC, succinate dehydrogenase is also involved in the TCA cycle.
What is the TCA cycle?The TCA is abbreviated for tricarboxylic acid also called citric acid or Krebs's cycle. It is a part of aerobic respiration that provides energy for cells. It involves a series of chemicals and reactions that are involved in releasing stored energy.
The complex II of the ETC cycle called succinate reductase contains a succinate dehydrogenase enzyme that is also involved in the TCA cycle for transforming succinate into fumarate and results in FADH₂.
Therefore, succinate dehydrogenase is an enzyme of ETC involved in TCA.
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rank the species (carbonate chloride iodate and sulfate) from most to least soluble
Answers
The order of solubility from most to least can be given as carbonate>sulfate>iodate>chloride. Carbonates are the most soluble.
What is solubility?The maximum amount of a material that may dissolve in another is known as its solubility. A saturated solution is created when a solvent can dissolve its maximum quantity of solute before reaching equilibrium. A supersaturated solution results when extra solutes are dissolved past its equilibrium solubility point under specific circumstances.
Dissolution is the action of disintegrating. In contrast to the speed of solution, which specifies how rapidly a molecule dissolves in a solvent, solubility is not a feature of matter. The order of solubility from most to least can be given as carbonate>sulfate>iodate>chloride.
Therefore, the order of solubility from most to least can be given as carbonate>sulfate>iodate>chloride.
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What is the missing word in the word equation below?
sodium hydrogencarbonate → carbon dioxide + water +
Answers
Answer:
sodium carbonate
Explanation:
Sodium hydrogen carbonate (also known as sodium bicarbonate or bicarbonate of soda) has the chemical formula NaHCO3. When it is heated above about 80°C it begins to break down, forming sodium carbonate, water and carbon dioxide. This type of reaction is called a thermal decomposition.
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What separation technique would be used to separate a mixture of two colorless liquids?
Answers
Distillation technique is used to separate a mixture of two colorless liquids of varying boiling point.
What is distillation?By using selective evaporation and condensation, distillation is a potent process for removing the component substance from a miscible fluid mixture. Simple distillation is one of the more significant forms of distillation. Distillation in fractions. distilled using steam. There are typically three primary steps in the distillation process: the process of vaporizing a chosen liquid from a combination. condensation of the liquid after purification. the liquid that has condensed is collected. Different liquids boil at various temperatures, which is the fundamental idea underpinning the distillation process. Therefore, when a mixture is heated, the component with the lower boiling point begins to boil first and turns into vapors that can be collected separately. Generating gasoline The manufacture of fuel is one of the distillation's most popular industrial applications. It is necessary to separate out the parts of crude oil that cannot be burned as fuel. The components of distillation units, or stills, typically include a boiling chamber where water enters to be heated and turned into vapor, a condensing chamber or coils where water is cooled and turned back into liquid, and a storage tank for cleaned water.To learn more about distillation, refer to:
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An indicator is used in a titration toshow when _It does this bychanging color.A there has been a change in temperatureB. to add more waterC. an equal number of moles of acid and base are present
Answers
ANSWER
EXPLANATION
Firstly, we need to define the word titration.
Titration is defined as a technique that is used to determine the known concentration of an unknown solution.
This normally occurs between an acid and a base
During titration, an indicator changes color when equilibrium has been attained between the two solutions. The solutions are normally acid and base. At equilibrium, the number of moles of acid is equal to the number of base.
Therefore, the correct answer is option C
20) Calculate the molar mass of H2CO3.A) 62.03 g/molB) 29.02 g/molC) 61.02 g/molD) 60.01 g/molE) 74.04 g/mol
Answers
The molar mass of \(H_{2} CO_{3}\) is 62.03g/mol
Molar mass: What Is It?
The mass in grams of one mole of a chemical is its molar mass. A mole is the measurement of the number of things, such as atoms, molecules, and ions, that are present in a substance.
The total mass of the constituent elements in a molecule is known as the element's molecular mass. The atomic mass of an element is multiplied by the number of atoms in the molecule to get the molecule's mass, which is then added to the masses of all the other elements in the molecule.
Molecular mass of \(H_{2} CO_{3}\) is 62.03g
Molar mass will be equal to molecular mass i.e. 62.03 g/mol
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The molar mass of \(H_{2} CO_{3}\) is 62.03g/mol
Molar mass: What Is It?
The mass in grams of one mole of a chemical is its molar mass. A mole is the measurement of the number of things, such as atoms, molecules, and ions, that are present in a substance.
The total mass of the constituent elements in a molecule is known as the element's molecular mass. The atomic mass of an element is multiplied by the number of atoms in the molecule to get the molecule's mass, which is then added to the masses of all the other elements in the molecule.
Molecular mass of \(H_{2} CO_{3}\) is 62.03g
Molar mass will be equal to molecular mass i.e. 62.03 g/mol
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What is the molecular formula for each of the following? a. 8-carbon hydrocarbon with two pi bond and 1 ring
b. a 8-carbon hydrocarbon with four pi bonds and no rings c. a 15-carbon hydrocarbon with four pi bond and 2 rings
Answers
a. An 8-carbon hydrocarbon with two pi bonds and one ring is represented by the molecular formula C₈H₈.
b. An 8-carbon hydrocarbon with four pi bonds and no rings is represented by the molecular formula C₈H₁₀.
c. A 15-carbon hydrocarbon with four pi bonds and two rings is represented by the molecular formula C₁₅H₁₆.
a. For an 8-carbon hydrocarbon with two pi bonds and one ring, the pi bonds indicate the presence of double bonds, and the ring suggests the presence of cyclic structure. Since the carbon atoms are fully saturated (no additional hydrogen atoms required), the molecular formula is C₈H₈.
b. In the case of an 8-carbon hydrocarbon with four pi bonds and no rings, the presence of four pi bonds indicates the presence of four double bonds. Since there are no rings mentioned, the structure is likely acyclic (non-cyclic). Therefore, the molecular formula is C₈H₁₀.
c. For a 15-carbon hydrocarbon with four pi bonds and two rings, we have the presence of four double bonds and two rings. The molecular formula will depend on how the double bonds and rings are arranged, therefore the formula is C₁₅H₁₆.
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determine the average value of the translational kinetic energy of the molecules of an ideal gas at (a) 0.00 oc and (b) 100 oc. what is the translational kinetic energy per mole of an ideal gas at (c) 0.00 oc and (d) 100 oc?
Answers
If the volume of the gas is increased to 9.90 l (at constant temperature), then its pressure will be 373 mmg.
According to Boyle's law, if the temperature of a gas is constant then the volume and pressure of the gas can be in relation to each other at different times.
We are given:
The initial volume of the gas V1 = 4.90 L
The initial pressure P1 = 755 mmg
The final volume of the gas V2 = 9.90 L
The final pressure of the gas P2 = ?
Using Boyle's law equation we can find the final pressure.
The equation is
P1V1 = P2V2
P2 = P1V1/V2
P2 = 755 x 4.90 / 9.90
P2 = 373 mmg
Thus, the final pressure is 373 mmg. Hence we can conclude that as the pressure decreases then volume of gas increases.
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SOMEONE HELP PLEASE!
Answers
Answer:
The nose consists of the visible external nose and the internal nasal cavity. The nasal septum divides the nasal cavity into right and left sides. Air enters two openings, the external nares (nostrils; singular, naris), and passes into the vestibule and through passages called meatuses. The bony walls of the meatuses, called concha, are formed by facial bones (the inferior nasal concha and the ethmoid bone). From the meatuses, air then funnels into two (left and right) internal nares. Hair, mucus, blood capillaries, and cilia that line the nasal cavity filter, moisten, warm, and eliminate debris from the passing air.
The pharynx (throat) consists of the following three regions, listed in order through which incoming air passes:
The nasopharynx receives the incoming air from the two internal nares. The two auditory tubes that equalize air pressure in the middle ear also enter here. The pharyngeal tonsil (adenoid) lies at the back of the nasopharynx.
The oropharyrnx receives air from the nasopharynx and food from the oral cavity. The palatine and lingual tonsils are located here.
The laryngopharynx passes food to the esophagus and air to the larynx.
The larynx receives air from the laryngopharynx. It consists of several pieces of cartilage that are joined by membranes and ligaments, shown in Figure 2:
The epiglottis, the first piece of cartilage of the larynx, is a flexible flap that covers the glottis, the upper region of the larynx, during swallowing to prevent the entrance of food.
The thyroid cartilage protects the front of the larynx. A forward projection of this cartilage appears as the Adam's apple (anatomically known as the laryngeal prominence).
The paired arytenoid cartilages in the rear are horizontally attached to the thyroid cartilage in the front by folds of mucous membranes. The upper vestibular folds (false vocal cords) contain muscle fibers that bring the folds together and allow the breath to be held during periods of muscular pressure on the thoracic cavity (straining while defecating or lifting a heavy object, for example). The lower vocal folds (true vocal cords) contain elastic ligaments that vibrate when skeletal muscles move them into the path of outgoing air. Various sounds, including speech, are produced in this manner.
The cricoid cartilage, the paired cuneiform cartilages, and the paired corniculate cartilages are the remaining cartilages supporting the larynx.
The trachea (windpipe) is a flexible tube, 10 to 12 cm (4 inches) long and 2.5 cm (1 inch) in diameter (Figure 2).
The mucosa is the inner layer of the trachea. It contains mucus‐producing goblet cells and pseudostratified ciliated epithelium. The movement of the cilia sweeps debris away from the lungs toward the pharynx.
The submucosa is a layer of areolar connective tissue that surrounds the mucosa.
Hyaline cartilage forms 16 to 20 C‐shaped rings that wrap around the submucosa. The rigid rings prevent the trachea from collapsing during inspiration.
The adventitia is the outermost layer of the trachea. It consists of areolar connective tissue.
The primary bronchi are two tubes that branch from the trachea to the left and right lungs.
Inside the lungs, each primary bronchus divides repeatedly into branches of smaller diameters, forming secondary (lobar) bronchi, tertiary (segmental) bronchi, and numerous orders of bronchioles (1 mm or less in diameter), including terminal bronchioles (0.5 mm in diameter) and microscopic respiratory bronchioles. The wall of the primary bronchi is constructed like the trachea, but as the branches of the tree get smaller, the cartilaginous rings and the mucosa are replaced by smooth muscle.
Alveolar ducts are the final branches of the bronchial tree. Each alveolar duct has enlarged, bubblelike swellings along its length. Each swelling is called an alveolus. Some adjacent alveoli are connected by alveolar pores.
The respiratory membrane consists of the alveolar and capillary walls. Gas exchange occurs across this membrane. Characteristics of this membrane follow:
Type I cells are thin, squamous epithelial cells that constitute the primary cell type of the alveolar wall. Oxygen diffusion occurs across these cells.
Type II cells are cuboidal epithelial cells that are interspersed among the type I cells. Type II cells secrete pulmonary surfactant (a phospholipid bound to a protein) that reduces the surface tension of the moisture that covers the alveolar walls. A reduction in surface tension permits oxygen to diffuse more easily into the moisture. A lower surface tension also prevents the moisture on opposite walls of an alveolus or alveolar duct from cohering and causing the minute airway to collapse.
Alveolar macrophage cells (dust cells) wander among the other cells of the alveolar wall, removing debris and microorganisms.
a.
Convert these temperatures to Kelvin:
A. -22 °C
b. 206 °C
C. 50 °C
d. 8 °C
Answers
0.50 moles of gas take up 10.5 L
of space under constant pressure
and temperature conditions.
What volume is required to hold
2.0 moles of the gas?
Answers
Answer:
Explanation:as V is proportional to n(mole),you can easily calculate using V1/n1=V2/
The volume required to hold 2 moles of the gas is 42 L
Explanation:
(2.0 x 10.5)/0.50
= 21/0.50
= 42 L
A test balloon contains 500. ml of 298.15 °k gas. if i heat the gas in the balloon to 323.15 °k with a laser, what will be the new volume of the gas in l?
Answers
The gas's new volume will be 0.542 L. 500 cc of 298.15 °K gas are contained in a test balloon. if I use a laser to raise the balloon's gas temperature to 323.15 °K.
Because the gas's kinetic energy has increased. Any three-dimensional solid's volume is just the amount of space it takes up. A cube, cuboid, cone, cylinder, or sphere can be one of these solids. Volumes vary depending on the shape. We have looked at the different solids and forms in 3D geometry.
(2)*Total Kinetic Energy per Mole/Pressure equals the volume of the gas.
Volume of Gas = (1/2) * 0.361
Gas volume is 0.542 litres.
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Which is a higher concentration, 10-9 M or 10-8 M? Explain.
Answers
Answer:
10-9 Millimeters/liters
Explanation:
Because 10-9 M Is more than 10-8 M
I hope this is correct
what layer of the atmosphere is the ozone layer in?
Answers
Answer: The stratosphere!!
Which of the following is the best thermal insulator to reduce the transfer of
heat by convection?
A. Air
B. Water
C. Alcohol
D. A vacuum
Answers
Answer:
A
Explanation:
Please someone I need help with chemistry ! If you can’t do them all that is fine please just do what you can and help . Please !
11. 2H202 (1) - 2H20 (1) + 02(g)
Drake asked Theo why the decomposition of hydrogen peroxide, H202, loses mass, especially when there are more molecules on the product side. Theo explains that it is because they decomposed the product. He says that decomposing the product destroys the original substance. To further prove his point, he explains that in nature, decomposition occurs when dead organic matter is destroyed by fungi: without this, the world would be littered with dead things. What, if anything, is wrong with this conversation of what happened in the reaction? Justify your answer.
13. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake. unknown + potassium carbonate & unknown + potassium sulfate . What do you observe when the unknown solution is mixed with potassium sulfate? (Can you see the shape underneath?)
14. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake. unknown + potassium carbonate & unknown + potassium sulfate . Write the complete balanced molecular equation(s) below of the reaction(s) that occurred, including the states of matter. HINT: Try writing ALL possible reactions that could have been created, and then decide which reactions actually occurred.
15. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake unknown + potassium carbonate & unknown + potassium sulfate . From your observations, what is your unknown solution? A - magnesium nitrate or B - strontium nitrate
16. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake. unknown + potassium carbonate & unknown + potassium sulfate . Justify your unknown solution in complete sentences, using your observations and the solubility rules as evidence in your explanation.
Answers
In the following lab activities:
11. In the conversation about the decomposition of hydrogen peroxide, Theo's explanation is incorrect. 12. no visible reaction occurs13. Mg(NO₃)₂ + K2CO₃ → MgCO₃ + 2KNO₃ and Mg(NO₃)₂ + K2SO₄ → No Reaction14. magnesium nitrate15. solubility rulesWhat are the results of these lab activities?The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction, only rearranged. Therefore, the total mass of the reactants must be equal to the total mass of the products. In the case of the decomposition of hydrogen peroxide, the loss of mass can be explained by the fact that some of the products, namely the oxygen gas, escape into the surroundings, leading to a decrease in the total mass of the system.
When the unknown solution is mixed with potassium sulfate, no visible reaction occurs. Therefore, it is not possible to determine the identity of the unknown solution based on this observation alone.
Possible balanced molecular equations for the reactions that occurred are:
Unknown + Potassium Carbonate → Magnesium Carbonate + Potassium Nitrate
Mg(NO₃)₂ + K2CO₃ → MgCO₃ + 2KNO₃
Unknown + Potassium Sulfate → No Reaction
Mg(NO₃)₂ + K2SO₄ → No Reaction
Based on the observations, the unknown solution is likely magnesium nitrate, as a reaction occurred when it was mixed with potassium carbonate, but no reaction occurred when it was mixed with potassium sulfate. This suggests that the unknown solution contains carbonate ions and not sulfate ions.
The identity of the unknown solution can be justified by using the solubility rules. Magnesium nitrate is soluble in water, as are potassium nitrate and magnesium carbonate. Potassium sulfate is also soluble in water. Therefore, when the unknown solution is mixed with potassium sulfate, no reaction occurs as both substances are soluble in water. However, when the unknown solution is mixed with potassium carbonate, magnesium carbonate is formed, which is insoluble in water and precipitates out of solution. This reaction suggests that the unknown solution contains magnesium ions and carbonate ions, indicating that it is magnesium nitrate.
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sort these molecules into the appropriate bin according to their polarity. HBr. CO2. BF3. H2. CH4. NH3
Answers
According to their polarity, HBr and NH3 belong to the polar bin, while CO2, BF3, H2, and CH4 belong to the nonpolar bin.
Polarity is determined by the electronegativity difference between atoms in a molecule. If the electronegativity difference is significant, the molecule is considered polar, while molecules with little or no electronegativity difference are nonpolar.
In the case of HBr, there is a significant electronegativity difference between hydrogen (H) and bromine (Br), resulting in a polar bond and a polar molecule.NH3, or ammonia, has a polar covalent bond due to the electronegativity difference between nitrogen (N) and hydrogen (H). The presence of the lone pair on nitrogen further contributes to its polarity.CO2, carbon dioxide, has a linear structure and symmetrical distribution of polar bonds between carbon (C) and oxygen (O). The polarity of the individual bonds cancels out, making the molecule nonpolar.BF3, boron trifluoride, has a trigonal planar structure with three polar covalent bonds between boron (B) and fluorine (F). However, the molecule is symmetrical, and the polarities of the bonds cancel out, making it nonpolar.H2, hydrogen gas, consists of two hydrogen atoms bonded together, and the electronegativity difference is negligible. Thus, it is a nonpolar molecule.CH4, methane, has a tetrahedral structure with four polar covalent bonds between carbon (C) and hydrogen (H). Similar to BF3, the symmetrical arrangement of the bonds results in the cancellation of polarities, making it nonpolar.To know more about polarity, refer to the link:
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A scientist is studying the impact of a new manufacturing plant on the local ocean ecosystem. How could she best monitor the impact of the manufacturing plant on populations in this ecosystem?
Answers
Answer:
A. Wild life survey
Explanation:
The only answer that involved observing the wild life
When are ionic compounds good conductors of electricity?
A.as solids
B.never
C.as both liquids and solids
D.As liquids
Answers
Answer:
C. as both liquids and solids
Explanation:
The ionic compounds are good conductors of electricity when they exist as both liquids and solids.
What are ionic compounds?Ionic compound or electrovalent compound is a type of compound which is formed between two elements when there is an exchange of electrons which takes place between the atoms resulting in the formation of ions.
When the atom looses an electron it develops a positive charge and forms an ion called the cation while the other atom gains the electron and develops a negative charge and forms an ion called the anion.
As the two atoms are oppositely charged they attract each other which results in the formation of a bond called the ionic bond.They are good conductors of electricity of heat, They are hard and brittle and even used as electrolytes.
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Find the pOH for the following:
A 1.34 x 10^-4 M solution of hydrochloric acid.
A) 10.13
B) 3.87
C) 4
D) 10
Answers
Answer:
A) 10.13 is the answer
Explanation:
Since HCl is a strong acid, its pH can be found by simply plugging it into the equation:
pH = -log[H+]
*H+ is just the concentration you were given*
Now that you have the pH, you just subtract it from 14 to find the pOH
I have attatched my work below. Hope this helps! :^)
To find the pOH of a solution, you can use the formula: pOH = -log10[OH-]
What is pOH?pOH is a measure of the concentration of hydroxide ions (OH-) in a solution. It is the negative logarithm (base 10) of the hydroxide ion concentration.
In this case, since we have hydrochloric acid (HCl), we need to consider the concentration of hydroxide ions (OH-) produced when HCl dissociates in water.
HCl is a strong acid and completely dissociates, meaning it produces an equal concentration of hydrogen ions (H+) and chloride ions (Cl-) in water. Since there are no hydroxide ions produced, the concentration of hydroxide ions is 0.
Therefore, the pOH of a hydrochloric acid solution is 0, and none of the options provided (A, B, C, D) is the correct answer.
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What is the theoretical yield of H 20 that can be obtained from the reaction of 4.5 g H 2 and excess O 2?
2H 2(g) + O2(g) → 2H 20(g)
4.5 g
40.8
80.g
9.0 g
81g
Answers
Answer:
9.0g
Whabshsbzhz sbsj dhbxjsbxjz sbsbbsbsjs
Explanation:
cause I believe
Which of these is an example of a biotic factor?
hot desert sun
Mojave River
acrid desert air
Mojave grasshoppers
Answers
Answer: Mojave grasshopper
Explanation: this is the answer because it is living
A biotic factor is something that it living. An abiotic factor is something that is nonliving. The only object that is living in the choices is the grasshopper. :)
A lump of zinc is tossed into a beaker of 500L of 14M hydrochloric acid. this reaction produces Hydrogen Gas and zinc (II) chloride. If the hydrogen gas is combusted and produces 645L of water vapor at 400 kelvin and 1.75 atm, what is the mass of the zinc?
Answers
If the hydrogen gas is combusted and produces 645L of water vapor at 400 kelvin and 1.75 atm, 2796.96 g mass of the zinc is produced .
Using the ideal gas law equation:
PV = nRT
n = (PV) / (RT)
= (1.75 atm * 645 L) / (0.0821 atm·L/(mol·K) * 400 K)
= 42.71 moles
the balanced equation for the reaction between zinc and hydrochloric acid:
Zn + 2HCl -> \(ZnCl_{2}\) + \(H_{2}\)
1 mole of zinc produces 1 mole of hydrogen gas. Therefore, the moles of zinc are also 42.71.
The molar mass of zinc is 65.38 g/mol.
Mass of zinc = moles of zinc * molar mass of zinc
= 42.71 moles * 65.38 g/mol
= 2796.96 g
Therefore, the mass of the zinc is 2796.96 grams.
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